Motor.



-1. SCHROEDER.

MOTOR.

APPLICATION FILED APR. 30. 1917.

2 SHEETS-SHEET l.

Patented Aug. 13, 1918.

WITNESSES TTUH/VEYS J. SCHROEDER.

MoTpH. APPLICATION FiLED APR-30. l9l.

Patented Aug( 13, 191s.

2 SHEETS-SHEET 2.

w/mfssfs w1/Enron www. U z@ By 2 Arrofmfrs Unirun sra'rns PATENT ortica rozen scniaonnne, or DAVENPORT, iowa Moron. `l

To all whom t may concern:

Be it known that I,.JOHN SoHnonnnR, a

, citizen of theUnited States, and a resident lill lib

of Davenporu'in the county of Scott and State` of Iowa, have invented a new and ImprovedMotor, of which the following is a full, clear, and exact description.

This invention is an improvement over the construction disclosed in my Patent No.

908,890, and it has reference more particu-` larly to the improved control of the motive fluid. Y

An object of the invention is to provide a simple, inexpensive and efficient motivefluid control for a` reciprocating engineof a character such `as to eliminate motiontransmission means and the flywheel used in connection `with my motor as shown in the patent previously mentioned.'

With the above and other objects in View, the nature of `which will more fully appear as the description proceeds, the invention consists in the novel construction, combination and arrangement of parts as herein fully described, illustrated and claimed.

In the accompanying drawings, forming part of the application, similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of my motor, certain parts of which are broken out to show the details of construction;

Fig. 2 is a plan view;

Fig. 3 is a vertical section on line 3-3, Fig. 1;

Fig. 4 is a perspective view of the detachable valve stemfor the admission and eX- haust valve;

Fig. 5 is a perspective view of the admission and exhaust valve; and

Fig. 6 is a vertical section on line 6 6, Fig. 1, illustrating the control of the inlet and outlet valve.

Referring to the drawings, 7 is the base or bed of the motor at the narrower end .of

which a lug 8 is provided and to which oneV is secured to a crosshead 12 which is guided in the bed and frame 13 secured to the bed 7. `A dented surface 14 is provided in the crosshead to form a rack which meshes with la pineu l5 bearing in the bed mi freine 1t..

` Specification of Letters Patent. Patented Aug.. 13, 1918. .AppIication filed April 30, 1917. Serial No. 165,433. j

ters a groove 21 of the valve stem 22, which is retained in the casing and in engagement with the valve by a cap 23 detachable from the valve casing and carrying suitable packings 21 for sealing the joint between the cup stem and valve casing. The projecting end of the stem is secured to an arm 25 `to oscillate therewith. The arm 25 has a slot 26 engaged by a screw or bolt 27 which is, in turn,.secured to the piston rod 28 of a piston 28 mounted to reciprocate in a secondary cylinder 29. i

An admission and exhaust valve 30 con-i' trols the ow to the ends of the cylinder 29 through passages 31. The valve 30 is connected to the inlet 18 by a conduit 32.' A

`conduit 33 connects the outlet of the valve 30 to the outlet conduit 19. The valve 30 is retained in its casing by a cap 34. Tov prevent leakage along the stem 35 of the valve 30 the stem is provided with a collar 36 having a beveled surface 37 which sits on a similar beveled surface 38 provided in the valve casing and against which the beveled surface 37 is maintained by the cap 34.

The projecting end of the stem 35 is provided with an arm 39 constrained to 0scillate with the valve. The arm carries a swivel block 40 through which a rod 4-1 is mounted -to slide, the end of the rod being connected to an extension 42 from the crosshead. `Adjustable collars 43- are provided on the rod 41-1 on each` side of the block 40 whereby the arm 39 is operated when the rod travels through the block.

rlhe valve 30 is operable near the end of each stroke of the main piston9 through the medium of the rod 4l. As shown in Figs. 1 and 2 it has just been operated at the end of the upward movement of the main piston whereby the valve 30 has brought into communication the part above the piston 28 with the exhaust conduit 33, and that below the piston 28 with the conduit 32; in consequence the motive fluid from the inlet conduit 18 has forced the piston 28 up, carrying therewith the arm Whitt reillatd the valve whereby that endof the cylinder 9 forces the piston it starts on the inward stroke.

outward.

As the piston 9 begins to approach the end of its outward stroke, the collar L13 near the end of the rod 41 engages the arm 39 of the Valve 30 and oscillates the valve 30, whereby the part of the cylinder 29 below the piston 28 is brought into communication with the exhaust conduit 33, while the up per part of cylinder 29 is brought into coinmunication with the conduit 32 wherethrough the fluid enters, the fluid in the part of the cylinder 29 below the piston flowing out through the outlet conduit 33, while the motive fluid entering into the upper part forces the piston Valve downwardly carrying therewith the arm 25 which oscillates the valve 16. This changes the connection of the conduits 17 with the inlet and outlet conduits 18 and 19 respectively. The movement of the piston 9 is thereby reversed and This diS- placement of the piston imparts an oscillat tory movement to the shaft 44 to which the pinion 15 is connected.

Copies of this patent may be obtained for I claim:

1. A motor comprising a cylinder, a pis ton in the cylinder, a piston rod, a crosshead for the rod, a valve for' controlling the admission and exhaust of the motive fluid to both ends of the cylinder, an arm connected to move with the valve, a piston connected to the arm, a cylinder for the piston, a valve for controlling the inlet and exhaust of the live motive fluid to the ends of the Second cylinder, an arm for said valve, and means for actuating said arm from the crosshr-ad.

2. A motor comprising a cylinder, a piston in the cylinder, a piston rod, a crosshead for the rod, a. valve controlling the admission and exhaust of motive fluid to the ends of the cylinder, an arm constrained to more with the valve, asecond cylinder, a piston therein having a. rod projecting out of the cylinder to engage the arm of the valve, said arm having a slot, means in said slot on gaging said piston rod of' the second cylinder, a valve controlling the admission and exhaust of motive fluid to the ends of said. "v

second cylinder, an arm connected to more with the last-mentioned valve, and moans for operating said arm from the crosshead near the end of stroke of the first-mentioned piston.

JOHN SGHROEDE l.

five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

